Preceding raw coal drying system of coal pulverizer of moisture in retrieving heat and extracting coal

• Main Authors: GUO ZHAOJUN, GUO XIAOKE, YAO YUFEI, SUN FENG, WANG YUEXIN, LIU QIJUN, ZHANG ZHICHUAN
• Format: Patent
• Language: Chinese; English
• Published: 09.01.2018
• Subjects: BLASTING; CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS; COMBUSTION APPARATUS; COMBUSTION PROCESSES; DRYING; DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM; FEEDING FUEL TO COMBUSTION APPARATUS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; HEATING; LIGHTING; MECHANICAL ENGINEERING; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; WEAPONS

The utility model provides a preceding raw coal drying system of coal pulverizer of moisture in retrieving heat and extracting coal which the characteristics are: including stove cigarette desiccator,screw feeder, coal gate door, cyclone, mixing chamber, fan heater, get water heat exchanger, isolation gating, utilize high temperature flue gas heat dry coal -fired, extract moisture in the fire coal simultaneously, use with direct -firing pulverizing system is supporting, can improve boiler island efficiency, reduce power generating coal consumption, realize flue gas waste heat utilization andwater recovery, also make traditional direct -firing pulverizing system grind high moisture content brown coal enable simultaneously. 种回收热量并提取煤中水分的磨煤机前原煤干燥系统，其特点是：包括炉烟干燥机、螺旋给料机、煤闸门、旋风分离器、混合室、暖风器、取水换热器、隔离门，利用高温烟气热量干燥燃煤，同时提取燃煤中水分，与直吹式制粉系统配套使用，能够提高锅炉岛效率，降低发电煤耗，实现烟气余热利用及水回收，同时也使得传统直吹式制粉系统磨制高水份褐煤成为可能。